其他数据列表中的数据列表 [英] Datalist inside other datalist

问题描述

你好，我的要求是
数据库2个表
--------------------
1)catagory(catid，category_name)
2)subcatagory(subid，subcategory_name，catid)
我里面有两个达塔尔人.
datalist1将显示类别名称.要显示类别名称，我已使用链接按钮
单击第二个数据列表时，在选择索引更改时，每个链接按钮将显示子类别
我的代码是
---------------------

Hello my requirement is that
database 2 tables
--------------------
1)catagory(catid,category_name)
2)subcatagory(subid,subcategory_name,catid)
i have two dtalist one inside other.
datalist1 will dispaly catagoryname .To display catagoryname i have taken link button
the 2nd datalist will show subctagory on click of each linkbutton on seleted index change
my code is
---------------------

DataListItem item = DataList1.SelectedItem;
       foreach (DataListItem ctitem in DataList1.Items)
       {
           ctitem.FindControl("DataList2").Visible = false;
       }
       SqlDataSource2.SelectParameters[0].DefaultValue = DataList1.DataKeyField[0].ToString();
       DataList1.SelectedItem.FindControl("DataList2").Visible = true;

--------------------------------
问题是，每次我单击链接按钮时刷新，它就不会出现在此循环内

谁能帮我解决这个问题

--------------------------------
problem is that its not coming inside this loop every time i click on link button the refresh take place

Can anyone help me about this

推荐答案

我认为您可以使用更新面板来实现.
否则您需要将selectedindex值或DataList1.selectedindex存储在视图状态或隐藏变量中

if(viewstate ["SelectedIndex"]！= null)
{
在此处重建数据列表1和2
}

谢谢
购买蕾丝

Hi,
I think you can achieve this using an update panel.
or else you need store the selectedindex value or the DataList1.selectedindex in a viewstate or a hidden variable

if(viewstate["SelectedIndex"] != null)
{
rebuild the datalist 1 and 2 here
}

Thanks
Buy Lace

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